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/* @author Zhang Wanjie                                             */

#include "ros/ros.h"
#include <sstream>
#include <string.h>
#include <stdlib.h>
#include "std_msgs/String.h"

static ros::Publisher reco_pub;
static std::string strHomeDir;

void sndFileCallback(const std_msgs::String::ConstPtr& msg)
{
	ROS_INFO("ffmpeg: [%s]", msg->data.c_str());
	std::stringstream ss;
	//ss << "/home/robot/speech_" << count << ".wav";
	// ss << "/home/robot/catkin_ws/src/xfyun_waterplus/tools/ffmpeg -i " << msg->data << " -v 0 -map_channel 0.0.0 -ar 16k -y /dev/shm/tmp.wav"; //16khz,单声道
	ss << strHomeDir << "/catkin_ws/src/xfyun_waterplus/tools/ffmpeg -i " << msg->data << " -v 0 -map_channel 0.0.0 -ar 16k -y /dev/shm/tmp.wav"; 
	int res = system(ss.str().c_str());

	std_msgs::String reco_msg;
	reco_msg.data = "/dev/shm/tmp.wav";
	reco_pub.publish(reco_msg);
}

int main(int argc, char *argv[])
{
	ros::init(argc, argv, "wav_rate_node");

    char const* home = getenv("HOME");
    strHomeDir = home;

	ros::NodeHandle n;
	reco_pub = n.advertise<std_msgs::String>("/xfyun/reco_file", 2);
	ros::Subscriber sub = n.subscribe("/xfyun/snd_file", 2, sndFileCallback);

	ros::spin();

	return 0;
}